/*import java.util.Scanner;

public class AcWing {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int[][] array = new int[n][2];
        int v = scan.nextInt();
        for(int i = 0; i < n; i++) {
            for(int j = 0; j < 2; j++) {
                array[i][j] = scan.nextInt();
            }
        }

    }
}*/

